Across
- 3. Plato's Apology of ______
- 4. King Arthur's sword
- 6. Social media bird
- 8. Boy with a lightning bolt scar
- 12. Painted the Vitruvian Man
- 14. Father of evolution
- 15. Ag
- 16. Group of crows
- 18. Capital of Australia
- 19. Sir Arthur Conan Doyle's detective
- 20. Where to find Hanging Gardens
Down
- 1. Largest planet
- 2. Negatively-charged particle
- 5. The "Emerald Isle"
- 7. First human in space
- 9. Quoth the Raven
- 10. Currency of Japan
- 11. Blood-filtering organs
- 13. Saturn's largest moon
- 17. Ice sport with brooms